Skip to main content
Topic: Ignition Solenoid (Read 2563 times) previous topic - next topic

Ignition Solenoid

Several folks on this forum have had trouble with their ignition solenoid inside the dashboard recently. My solenoid started getting hot and failing without warning, then suddenly working again, perhaps after it cooled down or something. I searched at several parts stores and finally found what appears to be a suitable replacement at Advance Auto Parts. It's a BWD Select S63 relay and I believe the Advance Auto Parts item number is: 18970119 if I'm reading my receipt correctly. The solenoid costs $20 plus sales tax and has a limited lifetime warranty, whatever that means. I just now installed and tested it. I can report back later on how it works if anyone cares. Follow the manufacturer's wiring instructions included with the new solenoid because there's one terminal you're not supposed to use. I tested all the wires connected to my old solenoid to identify what device(s) each wire powered. I found the DDEC computer wire and connected it directly to the small terminal on the solenoid with the ignition switch wire so the engine won't die when the solenoid quits. I've been driving that way for a long time now with no problems. Hope this information helps someone... Feel free to contact me directly if you need help and I'll talk you through it.

Scott:
(615) 482-7650
Scott Cook
1991 U300 36' 6V92TA
Old Town Penobscot 16
1984 Honda VF1100C (V65 Magna)

Re: Ignition Solenoid

Reply #1
I went thru this a couple of years ago and I can only tell you that if the solenoid is not a heavy duty one, you will be replacing it again.  These solenoids handle a heavy load and need to be designed to handle it.  Hope you have a good one!  There is a previous post and associated thread on this some time mid to late last year.  Hope you have a good one!!  ----  Fritz
Fritz & Kathy Johnson
1991 36'

Re: Ignition Solenoid

Reply #2
My old solenoid wasn't working reliably and this new one only cost $20 with a lifetime warranty. If this new one continues to work I'll be okay. If it quits and they honor the warranty I'll be okay. If they don't honor the warranty I'm out a whopping $20 :-(
Scott Cook
1991 U300 36' 6V92TA
Old Town Penobscot 16
1984 Honda VF1100C (V65 Magna)

Re: Ignition Solenoid

Reply #3
Scott,

I replaced my dash solenoid last week due to the same symptoms.  The original one was 80 amps and I bought another one from FOT for a spare when I was there a couple of weeks ago for about $30.  I believe the BWD Select S63 is only 30 amps. It may not be heavy duty and last very long under our circumstances as Fritz said. 

I replaced my old one with a 200 amp Cole-Hersee as recommended by Pierce Stewart and others. From O'reilley auto parts it cost about $70 but is heavy duty and uses silver tungsten carbide contacts. It has four posts and fits exactly where the old was.  I also used the same solenoid for the boost and the remote start which I replaced last summer.  So far so good. 

Jerry aka Murph
The selected media item is not currently available.
Jerry and Cindy Maddux
1993 U300/36WTBI DD6v92TA
build 4271  "Miss Lou"
1995 suzuki sidekick 4x4 toad
Gulfport, Ms

"Pride of Ownership"

Re: Ignition Solenoid

Reply #4
Scott,

I spent a few minutes on BWD's website, but could not answer the two critical questions for selecting an ignition solenoid:

Amp rating.

Continuous duty, not intermittent duty (like for starter solenoid function).

If you find answers to those two questions, that will give you a good idea as to its functionality for your purpose.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Ignition Solenoid

Reply #5
I'm in an unfamiliar area and wasn't able to find an O'Reilly Auto Parts store here yet. Even if this new solenoid only works temporarily it's worth $20 for now. I was swapping the defroster and wiper wires from the load side of the old solenoid to the line side every time I started the engine. I didn't bother to swap it back while I was in the grocery store yesterday and the air dryer heater came on while the engine wasn't running due to the cold weather. It ran the cranking battery down so low the engine wouldn't start so I snarfed some of the groceries I just bought while waiting for the generator to charge the battery... Then I looked for a new solenoid again with determination and found this one. ;D
Scott Cook
1991 U300 36' 6V92TA
Old Town Penobscot 16
1984 Honda VF1100C (V65 Magna)

Re: Ignition Solenoid

Reply #6
best price I've found on the Cole Hersee is Ryder Fleet products, about 42 bucks
The selected media item is not currently available. Dave Head & Megan Westbrook
Titusville, FL - The Great Outdoors
'98 270 buying this month
Toad is a 2018 F150 XLT

Re: Ignition Solenoid

Reply #7
I installed a Blue Sea Solenoid, very expensive but should last forever.  The ignition solenoid is to important to go with a model not really designed for continuous duty.  Just my 2 cents.
Terry and Cheryl Brown
1997 U295 36'
Build #5066
2006 Jeep TJ Rubicon
1993 BMW R100 GSPD

Re: Ignition Solenoid

Reply #8
The $20 solenoid has held up so far, only 60 miles ...but hey that's only about 33 cents per mile if it dies right now. ;D

...and note that I moved the DDEC computer to the ignition switch so the engine won't die when the solenoid does, so I'll just have to pull over and move the wires to the line side of the solenoid to get the wipers, defroster, turn signals, and other stuff back until I find another solenoid.
Scott Cook
1991 U300 36' 6V92TA
Old Town Penobscot 16
1984 Honda VF1100C (V65 Magna)

Re: Ignition Solenoid

Reply #9
@  $20.00 a pop, why not carry a spare
1993 U300, 6v92
build 4366
USAF retired, Flight Engineer, C124, C130
 ATP, A & E.  & ex AI

Re: Ignition Solenoid

Reply #10
Be careful running the Engine ECM off the ignition switch.  That extra load could easily overheat the ignition switch.  THAT is why they used the ignition solenoid in the first place.

Please, get a constant duty solenoid of adequate (actually MORE Than adequate) amp rating and wire it as OE.

Brett
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Ignition Solenoid

Reply #11
I installed a Blue Sea Solenoid, very expensive but should last forever.
Was having intermittent power losses way back in 2011.  The Blue sea 9012 250-amp ignition solenoid sure solved my electrical problems.  Found it very reasonably priced on line at a marine store in the middle of Tennessee.  You want to check around cause they sure are pricey. 
1994 U225
build #4514

Re: Ignition Solenoid

Reply #12
I've already driven halfway across the country with the DDEC connected directly to the ignition switch. I'm never gonna put it back on the solenoid. I don't ever want the engine to die in traffic again. It's too dangerous. The DDEC computer is the only device other than the solenoid that's being powered by the ignition switch. If the ignition switch dies it'll give me an excuse to buy two new switches that are keyed alike so my car and coach will have the same key. :) The ignition switch occasionally didn't work when I first got the coach. The previous owner said it was due to lack of use. Apparently he was correct because it's very reliable now that I use it every few days.

Another nice modification is to get a battery cable from a lawn tractor or other small engine with electric start and connect all the wires from one side of the solenoid to one end of the cable with a bolt and nut, wrap it up with electrical tape well, and connect the other end of the cable to the solenoid. Do the same thing to the wires on the other side of the solenoid. This makes it super easy/safe to swap the one big cable to the other side of the solenoid in no time if the solenoid fails... No need to carry a spare solenoid with you. :)
Scott Cook
1991 U300 36' 6V92TA
Old Town Penobscot 16
1984 Honda VF1100C (V65 Magna)

Re: Ignition Solenoid

Reply #13
Scott, Looks like installing the right solenoid would be much less trouble than swapping cables, taping cable ends , rewiring etc.  But....  what ever is easiest.
Gary B

Re: Ignition Solenoid

Reply #14
Why all of the messing around, why not just do it right the first time??  ----  Fritz
Fritz & Kathy Johnson
1991 36'

Re: Ignition Solenoid

Reply #15
saved $20.00 with cable swapping, well worth it ??????
why spend $$$$
1993 U300, 6v92
build 4366
USAF retired, Flight Engineer, C124, C130
 ATP, A & E.  & ex AI

Re: Ignition Solenoid

Reply #16
Bill,

No idea the amp draw of the engine computer (or the voltage drop is causes across the ignition switch).

Would be a very expensive "saving" if the engine computer goes out because of low voltage!
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Ignition Solenoid

Reply #17
Blue sea Solenoid at wholesalemarine.com$156.89.
The selected media item is not currently available.Bill&Doris 97 U270 36'
University of Parris Island Class of 66
Semper Fi  Build# 5174 MC#17094

Re: Ignition Solenoid

Reply #18
Amen...sensitive device
Tim Fiedler    2025 LTV Unity MBL on Order
2000 Chevy Tracker 2 Door Convertible 4WD Now lifted 4.5"
1985 Citroen 2CV6 Charleston
Murphy Rebel on wheels with 175HP Titan
Cessna P337
1980 48' Westport MY (!/4 Share)

Re: Ignition Solenoid

Reply #19
Wow, I'm so sorry I even posted this. I frequently feel this way after trying to share information on this site. It's not like I planned to use a cheap solenoid, it's the only one I could find at the time. It's working great so far. The computer works fine on the ignition switch and has for thousands of miles now. When it was on the bad solenoid it frequently ran at low voltages and didn't get damaged. I can't see how the ignition switch will hurt the computer if it survived running on the bad solenoid. I'm definitely not putting the computer back on the solenoid because it's dangerous to have the engine die in traffic when the solenoid quits, which it eventually will no matter how expensive the solenoid is. I wish I could figure out how to remove this entire thread. I was just trying to help someone in a bind who might be able to find an Advance Auto Parts store when their solenoid quits. I posted this from firsthand experience and waited until I was sure it worked before posting. I didn't speculate on how long the solenoid would last or if the computer would be damaged or any other stuff that I have no way of knowing about.
Scott Cook
1991 U300 36' 6V92TA
Old Town Penobscot 16
1984 Honda VF1100C (V65 Magna)

Re: Ignition Solenoid

Reply #20
Scott, In offering my opinion I was trying to be helpful as were others who commented.  You are not the only one who at times feels that comments are directed to them that they don't believe are appropriate.  Relax, learn from others, no one here is trying to give you a bad time.
Gary B

Re: Ignition Solenoid

Reply #21
Scott,

I think most of the negative comments are because of concern that you WILL encounter failures by using the wrong components.

Go to this link: L Solenoid - 12/24V DC 250A - Blue Sea Systems

As posted above, not inexpensive, but rated for 1 MILLION cycles and up to 450 amp continuous rating (less if smaller gauge wire used). Never heard of one of these failing in the many years they have been used.

Others have posted higher amp rated, constant duty solenoids with better contact material than the OE ones for much less $$ than the Blue Sea.

Lots of important systems run off that ignition solenoid-- would hate for you to be driving in inclimate weather and have the windshield wipers and defroster cut off.

Sometimes "reinventing the wheel" is reasonable.  Other times, listening to the sage advice of the many who have gone before you is more reasonable.

Brett
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Ignition Solenoid

Reply #22
Just exactly where is the solenoid in question on a 99 320 40ft? Thanks jc
JC
1999 U320

Re: Ignition Solenoid

Reply #23
Scott,

I ended up with four cole her see spares - bought two to have as spares, forgot I did it and bought to more. If you would like one for free let me know where to ship it and I can send it out -

Tim
Tim Fiedler    2025 LTV Unity MBL on Order
2000 Chevy Tracker 2 Door Convertible 4WD Now lifted 4.5"
1985 Citroen 2CV6 Charleston
Murphy Rebel on wheels with 175HP Titan
Cessna P337
1980 48' Westport MY (!/4 Share)

Re: Ignition Solenoid

Reply #24
Hey Tim.

I'll pay for one.

Best, paul
Quote

I ended up with four cole her see spares - bought two to have as spares, forgot I did it and bought to more. If you would like one for free let me know where to ship it and I can send it out -
1999 U320 40' 1200 watts on roof. 12cf AC/DC Cold plate fridge/freezer. VMS 240 CL Honda Element